Transcript PMQ2 version 2.ppt

PMQ2 version 2
Magnetic Measurements
BL vs X fit
• BL vs X for runs 26, 31 & 32.
• Integrated Gradient = -7.7878 +/- 0.02403 Tesla
• Temperature = 21.8 +/- 0.4 degree C, Temp
runs 26 & 31.
BL vs X plots
Integrated Gradient Measurements
• Measured integrated gradient using Metrolab
instead of HP 3458A because there were too
few points for the 3458A measurement. The
deadtime of the 3458A measurement was
causing a significant under reporting of the
voltage (~15%).
• BL vs X run 2, which uses the 3458A has a
Integrated Gradient = 6.7058 +/- 0.017454 T.
Hall probe Integrated Gradient
Checks
• Used hall probe to scan along the z axis at
several x points and then use the integrated
value at each x to determine the integrated
gradient (BL).
• Using runs 8, 9 and 11, BL using hall probe = 7.7299 +/- 0.20038 Tesla.
• BL wire/ BL hall = 1.00749 which is reasonable
given the difficulties in aligning the hall probe.
• Run 10 was not used because the probe was
misaligned by 0.5 mm which made the BL value
come out to be -8.8987 +/- 0.69484.